TDC-GP30-F01 Ultrasonic Flow Converter

Firmware supported intelligent ultrasonic flow converter


  • High performance and ultra-low power 32-bit CPU
  • Advanced high-precision analog part
  • Transducers can be connected directly to GP30, no external components required
  • Firmware for calculation of flow, volume and temperature, including linearization and two-point calibration
  • Firmware adopts automatically to zero flow (2Hz) or flow (8Hz) condition
  • Error handling, bubble detection


  • Lowest power solution for ultrasonic water meters
  • On-chip firmware allows fastest time-to-market
  • Best measurement performance for leakage detection

Product parameters

Analog Frontend Yes
First Wave Detection Yes
Amplitude Measurement Yes
Number of Hits 31
Resolution [ps] 11
Operating Supply Range 2.5 to 3.6
Interface SPI, UART, Pulse
CPU 32-bit
Firmware Volume, flow, and temperature calculation
Memory 4k NVRAM, 4k ROM
Ambient Temperature Range [°C] -40 to +125
Package QFN32, QFN40

General Description

TDC-GP30-F01 is a complete ultrasonic flow metering solution, including the flow calculation. It drastically simplifies the design of ultrasonic heat and water meters and is the necessary step for compact energy-saving ultrasonic water meters. The ultra-low current capabilities allow the use of standard 2/3 AA or AA lithium thionyl chloride batteries at 6-8 Hz measuring frequency even in the water meter version. The TDC-GP30-F01 firmware does the linearization and temperature compensation based on spool piece specific calibration data and completes the system-on-chip approach.

This product suits for the following applications:

  • Non-invasive cold water meter


Title Category Headline Buy
TDC-GP30DemoKit Application Board Development Kit for TDC-GP30
TDC-GP30EvalKit Application Board Evaluation Kit for TDC-GP30, QFN40 package

Technical Documents

Type Description Language
Application Note Toggling GPIO pin of GP30-F01 using open firmware section and ASM Source Code English
Application Note Toggling GPIO pin of GP30-F01 using open firmware section English
Application Note Vol. 3 User Manual English
Application Note TDC-GP30 UART Communication English
User Guide Vol.5 User Guide of Calibration Engine English

Environmental Documents

Type Description Language
Material Declaration Form MDF_502030007_TDC-GP30YA-F01 English
Material Declaration Form MDF_502030005_TDC-GP30YD-F01 English


Type Description Language
Product Change Notification Change Notification_MOQ Amendment_PCAPx_TDC-GPx_PS09FN (issued 2017-Mar) English

Other Information

Type Description Language
Block Diagram TDC-GP30 Block Diagram English
Factsheet Building Static Water Meters of High Quality English

Ownership of this product has moved to Sciosense

Please be informed that this product is now owned by Sciosense B.V., a joint venture of ams AG and Wise Road Capital, effective January 13th, 2020.

ScioSense Environmental Sensors